package net.bwie.realtime.jtp.dws.log.function;

import net.bwie.realtime.jtp.dws.log.bean.PageViewBean;
import org.apache.commons.lang3.time.FastDateFormat;
import org.apache.flink.streaming.api.functions.windowing.WindowFunction;
import org.apache.flink.streaming.api.windowing.windows.TimeWindow;
import org.apache.flink.util.Collector;

public class PageViewWindowFunction implements WindowFunction<PageViewBean, String, String, TimeWindow> {


    private FastDateFormat format = FastDateFormat.getInstance("yyyy-MM-dd HH:mm:ss");

    @Override
    public void apply(String s, TimeWindow timeWindow, Iterable<PageViewBean> iterable, Collector<String> collector) throws Exception {
        String windowStartTime = format.format(timeWindow.getStart());
        String windowEndTime = format.format(timeWindow.getEnd());

        Long pvCount = 0L;
        Long pvDuringTime = 0L;
        Long uvCount = 0L;
        Long sessionCount = 0L;
        for (PageViewBean pageViewBean : iterable) {
            pvCount += pageViewBean.getPvCount();
            pvDuringTime += pageViewBean.getPvDuringTime();
            uvCount += pageViewBean.getUvCount();
            sessionCount += pageViewBean.getSessionCount();
        }

        String output =
                windowStartTime
                + "," + windowEndTime
                + "," + windowStartTime.substring(0,10)
                + "," + s
                + "," + uvCount
                + "," + sessionCount
                + "," + pvCount
                + "," + pvDuringTime;

        collector.collect(output);
    }
}
